Bristol Motor Speedway has to switch from hosting the MLB Speedway Classic and be ready for NASCAR's return to the historic racetrack for a playoff race Sept. 13.

The instant the Atlanta Braves and the Cincinnati Braves cleared the baseball diamond inside the infield at Bristol Motor Speedway, a new clock started. “The Last Great Colosseum” has to switch from hosting the MLB Speedway Classic and be ready for NASCAR’s return to the historic racetrack hosting a playoff chase race Sept.

The instant the Braves and Reds cleared the baseball diamond inside the infield at Bristol Motor Speedway, a new clock started.